WO2022168388A1

WO2022168388A1 - Furniture system, and furniture

Info

Publication number: WO2022168388A1
Application number: PCT/JP2021/041462
Authority: WO
Inventors: 英一渡部
Original assignee: コクヨ株式会社
Priority date: 2021-02-08
Filing date: 2021-11-11
Publication date: 2022-08-11
Also published as: JP2022121261A

Abstract

In order to resolve drawbacks resulting from the fact that joining parts of ground-contacting bodies with respect to the bottom surfaces of furniture have various shapes and other configurations, a furniture system S is provided with a desk D, which is an item of furniture, and a plurality of types of furniture ground-contacting devices A4, B4, C4 which are installed in a plurality of locations on the bottom surface of the desk D, wherein: the plurality of types of furniture ground-contacting devices A4, B4, C4 are provided with a common housing 5 that can be attached to and removed from the desk D, and ground-contacting bodies A62, B62, C62 that are in ground contact with a floor surface and that have respectively different forms; and any of the plurality of types of furniture ground-contacting devices A4, B4, C4 can be selected and installed in the desk D.

Description

Furniture system and furniture

The present invention relates to furniture used in schools, offices, etc., a furniture system comprising such furniture and a furniture grounding device attached to the bottom surface of the furniture, and furniture used in such a furniture system.

Conventionally, various grounding bodies such as rubber feet, adjusters, and casters are often attached to the bottom surface of furniture used in schools, offices, etc. (see Patent Document 1, for example).

By the way, conventionally, there are various shapes and other configurations of the joining portions of these various grounding members to the bottom surface of furniture. For this reason, it is necessary to change the shape of the joining portion to the grounding body formed on the bottom surface of the furniture for each type of grounding body. In other words, if different types of grounding bodies are attached to the bottom surface of a common piece of furniture as required, it is necessary to prepare a plurality of production lines corresponding to the different shapes of joints with the grounding bodies. Therefore, there is a problem that it is not possible to fully share the members and production lines that are expected by standardizing furniture (Problem 1).

In addition, there are grounding bodies that need to be attached to furniture in a predetermined posture. Conventionally, it has been considered to provide a mark such as an arrow at the mounting position of the grounding member and the furniture as a configuration for ensuring that the mounting posture of the grounding member is not mistaken. However, such a mark is not always visible in the assembly process, and there is a possibility that the grounding member is attached to the furniture in an incorrect posture (Problem 2).

JP-A-11-206472

The object of the invention of claim 1 is to solve the above-mentioned problem 1, that is, to eliminate the problems caused by various configurations such as the shape of the connection part of the grounding member to the bottom surface of the furniture.

The invention of claim 2 aims to solve the problem 2 mentioned above in addition to the problem 1 mentioned above, that is, to prevent the occurrence of the problem that the grounding member is attached to the furniture in an incorrect posture.

The object of the invention of claim 8 is to solve the aforementioned problem 2.

A furniture system according to a first aspect of the invention comprises furniture and a plurality of types of furniture grounding devices attached to a plurality of locations on the bottom surface of the furniture, wherein the plurality of types of furniture grounding devices are , a common housing that can be attached to and detached from the furniture, and different types of grounding members that are grounded on the floor, and one of a plurality of types of furniture grounding devices is selected and attached to the furniture is what makes it possible.

In the present invention, the "common housing" is a general concept that indicates at least the shape of joints with furniture in common, and the internal structure may or may not be common.

The furniture system according to the invention of claim 2 is the furniture system of claim 1, wherein a plurality of recessed portions into which the housing can be fitted from below are provided in the bottom surface of the furniture, and the recessed portions are The shape of the bottom surface is such that the furniture grounding device can be attached only in a predetermined posture, and the shape of the top surface of the housing of the furniture grounding device corresponds to the bottom surface of the recess.

The furniture system according to the invention of claim 3 is the furniture system of claim 2, wherein the depth of the recess is different between one end and the other end of the housing of the furniture grounding device. The height dimension is made different between the one end and the other end in correspondence with the depth of the recess.

According to a fourth aspect of the present invention, there is provided a furniture system according to the third aspect, wherein the housing of the furniture grounding device has bolt insertion holes penetrating vertically at both ends thereof, and the bolt passages pass through the bolt insertion holes. The grounding device for furniture is fixed to the bottom surface of the furniture with bolts that are aligned, and the depth of the bolt insertion hole is made different between one end side and the other end side.

The furniture system according to the invention of claim 5 is the furniture system according to

claim

1, 2, 3, or 4, wherein one of the furniture grounding devices is vertically rotatable on the housing. The rotary member is supported and has the grounding member on its lower surface side, and an elastic member having viscoelasticity, which is arranged in the housing and compressed by the rotation of the rotary member.

The furniture system according to the invention of claim 6 is the furniture system according to

claim

1, 2, 3, 4, or 5, wherein the grounding body of the furniture grounding device is a lid body attached to the lower surface of the housing. This lid is provided with a window through which the grounding member protrudes to the outside.

The furniture system according to the invention of claim 7 is the furniture system according to claim 6, wherein the housing and the lid are fastened together to the furniture with a common bolt, and the housing and the lid are fixed together. A temporary fixing element is provided between the lid body and the lid body to prevent the lid body from falling off before being fixed by the bolt.

In the furniture according to the invention of claim 8, a plurality of concave portions are provided on the bottom surface to which the furniture grounding device can be attached only in a predetermined posture.

According to the first aspect of the invention, since a plurality of types of furniture grounding devices have a common housing that can be attached to and detached from the furniture, the shape of the mounting portion of the furniture grounding device on the furniture side is also made common. can be done. Therefore, it is possible to solve the problems caused by the various shapes and other configurations of the joining portions of the various conventional grounding members to the bottom surface of the furniture.

According to the inventions of

claims

2 and 8, since the furniture grounding device can be attached to the furniture only in a predetermined posture, it is possible to prevent the grounding member from being attached to the furniture in an incorrect posture. .

1 is a perspective view of a desk equipped with a first furniture grounding device according to an embodiment of the present invention; FIG. Fig. 2 is a left side view of a desk on which the first furniture grounding device according to the embodiment is mounted; FIG. 4 is an exploded perspective view showing how each furniture grounding device according to the embodiment is attached to a desk. The bottom view of the leg base which mounted|worn the 1st grounding device for furniture which concerns on the same embodiment. FIG. 5 is an enlarged cross-sectional view taken along line AA in FIG. 4; FIG. 2 is a side view of the first furniture grounding device according to the same embodiment; The α arrow view in FIG. 6 . FIG. 4 is an explanatory view showing a mounting mode of the first furniture grounding device according to the embodiment; FIG. 2 is an exploded perspective view of the first furniture grounding device according to the embodiment; The side view of the second furniture grounding device according to the same embodiment. β arrow view in FIG. 10 . The side view of the 3rd grounding device for furniture which concerns on the same embodiment. γ arrow view in FIG. 12 . FIG. 11 is an exploded perspective view showing how each furniture grounding device according to another embodiment of the present invention is attached to a desk. The side view of the 4th grounding device for furniture which concerns on the same embodiment. ββ arrow view in FIG. 15 . The side view of the 5th grounding device for furniture which concerns on the same embodiment. γγ arrow view in FIG. 17 .

An embodiment of the present invention will be described with reference to the drawings.

This embodiment is a furniture system S comprising a school desk D as furniture and a plurality of types of first to third furniture grounding devices A4 to C4 attached to a plurality of locations on the bottom surface of the desk D. is. These furniture grounding devices A4 to C4, as shown in FIG. 3, include a common housing 5 detachable from the desk D, and grounding bodies A62 to C62 of different modes grounded on the floor surface F, respectively. Any one of these furniture grounding devices A4 to C4 can be selected and attached to the desk D.

<Desk D>
First, desk D will be described.

Desk D, as shown in FIGS. 1 and 2, is for students to be placed on the floor surface F of a classroom. A curtain plate 3 is installed between the upper end portions of the legs 1.

As shown in FIGS. 1, 2 and 3, each of the left and right legs 1 has a leg support 12 erected from the inner side of the rear end of the leg base 11 .

The first to third furniture grounding devices A4 to C4 are attached to the recessed portions 11a provided in the vicinity of the front end and the rear end of the leg base 11 at a plurality of locations on the bottom surface of the desk D. Either one is selectively worn.

<First furniture grounding device A4>
The first furniture grounding device A4 will be described below.

As shown in FIGS. 3 and 5 to 9, the furniture grounding device A4 includes a housing 5 detachably provided at the bottom of the desk D, and a floor rotatably supported by the housing 5 on the lower surface side. A rotating member A6 having a grounding member A62 that contacts the surface F, and an elastic member 7 having viscoelasticity, which is arranged in the housing 5 and compressed by the upward rotation of the rotating member A6. is. Here, this furniture grounding device A4 can be attached to the desk D only in a predetermined posture. That is, as shown in FIGS. 3 to 5, a plurality of recessed portions 11a into which the housing 5 can be fitted from below are provided on the bottom surface of the desk D, ie, the bottom surface of the leg base 11. The shape of the bottom surface 11b allows the furniture grounding device A4 to be attached only in a predetermined posture.

As shown in FIG. 5, the housing 5 is internally provided with a space 5s formed by curving the ceiling surface 5a so as to correspond to the rotation locus A6k of the rotating member A6. It is accommodated in this space 5s in a curved posture along the . One end 7a of the elastic member 7 is in contact with the upper surface A6a of the rotating member A6, and the other end 7b is in contact with the rising surface 5b of the housing 5 intersecting the end of the ceiling surface 5a. The housing 5 is a box-shaped unit integrally made of, for example, synthetic resin, and has bolt insertion holes 5c1 and 5c2 extending vertically through both ends, and the above-described space 5s in an intermediate region. there is The space 5s is open downward, and its ceiling surface 5a is formed outside the rotational locus A6k of the rotational member A6 so as to approximate the rotational locus A6k. The ceiling surface 5a is composed of an upright one end flat portion 5a1, a cylindrical surface portion 5a2 continuous with the one end flat surface portion 5a1, and a horizontal other end flat surface portion 5a3 continuous with the cylindrical surface portion 5a2. The terminal end of the flat portion 5a3 on the other end side is perpendicular to the vertical upright surface 5b. As shown in FIGS. 5 and 9, a protrusion 5d1 is formed on the bottom surface 5d of the housing 5 so as to surround the opening edge of the space 5s. An engaging protrusion 52 that can be elastically engaged is projected from the engaging recess 8d of the body 8. As shown in FIG. As shown in FIG. 8, the shape of the top surface 5f of the housing 5 corresponds to the bottom surface 11b of the recessed portion 11a of the desk D so that the furniture grounding device A4 can be attached only in a predetermined posture. There is. That is, when the furniture grounding device A4 is attached in a predetermined posture, one end portion 5f1 of the top surface 5f of the housing 5 is connected to one end portion 11b1 of the bottom surface 11b of the recessed portion 11a, and the other end portion of the top surface 5f of the housing 5 is 5f2 is set to have a shape capable of coming into contact with the other end portion 11b2 of the bottom surface 11b of the recessed portion 11a. In other words, the height dimension h1 of one end of the housing 5 of the furniture grounding device A4 and the depth of the other end correspond to the depths d11 and d12 of the one end and the other end of the recess 11a of the desk D, respectively. The height dimension h2 is made different. That is, the bolt insertion hole 5c1 on the one end side and the bolt insertion hole 5c2 on the other end side have different depths d21 and d22. A rotating member A6 is accommodated in the bottom portion of the housing 5 having such a structure so as to be vertically rotatable. Further, the rotating member A6 is held in the housing 5 by a cover 8 attached to the bottom surface 5d of the housing 5. As shown in FIG.

As shown in FIG. 9, the rotating member A6 has supporting shafts A61a projecting from both sides of the proximal end thereof, and the supporting shafts A61a are pivotally supported in pivotal support grooves 5x formed in both side walls 51 of the housing 5. and is arranged at the lower end opening of the space 5s. More specifically, as shown in FIGS. 5 and 9, the rotating member A6 comprises a member main body A61 having a support shaft A61a at its proximal end, and a grounding member A62 projecting from the lower surface of the member main body A61. is integrally made of synthetic resin, for example. Both inner side surfaces 5e forming the space 5s of the housing 5 described above are formed with pivot grooves 5x for rotatably supporting both spindles A61a of the rotating member A6. Both pivot grooves 5x have their lower ends opened to the bottom surface 5d of the housing 5, and the rotating member A6 can be attached to the housing 5 by engaging both pivot shafts A61a with both pivot grooves 5x from below. can be done. The grounding member A62 is provided so as to hang downward from the member main body A61, and a grounding cam surface A62a is formed on the lower surface of the grounding member A62a, the grounding position of which changes with the rotation of the rotating member A6. ing. The grounding member A62 of this embodiment has a shape that gradually narrows toward the lower end. The rotating member A6 is held in the housing 5 by a lid 8 attached to the bottom surface 5d of the housing 5. The lid 8 projects the grounding member 62 of the rotating member A6 to the outside. window 8a is provided. As shown in FIG. 9, the housing 5 and the lid 8 are plate-like members fastened together to the leg base 11 of the desk D by a common bolt 9. is provided with a temporary fixing element K for preventing the lid 8 from falling off from the housing 5 before being fixed with the bolt 9 . In this embodiment, the temporary fixing element K is formed by elastically engaging an engaging projection 52 provided on the outer peripheral surface of the projection 5d1 of the housing 5 and an engaging recess 8d provided on the lid 8. be. As shown in FIGS. 7 and 9, the cover 8 has a rectangular plate-like shape, and has screw holes 8c at both ends that match the bolt holes 5c1 and 5c2 of the housing 5. is provided with the window 8a described above, and is provided with the engaging recess 8d as described above. The engaging recess 8d of the present embodiment is a through hole penetrating through the lid 8 in the thickness direction. The height dimension of the lid body 8 is uniform over the entire area. A6c is the rotation center of this rotation member A6.

The elastic member 7 is made of, for example, low-resilience urethane, and as shown in FIGS. are housed in The elastic member 7 may be manufactured by punching a thick plate material. In that case, the initial shape becomes a curved shape as shown in the drawing. More specifically, the elastic member 7 in the accommodated state has one end 7a in contact with the upper surface A6a of the rotating member A6 on the rotating end side and the other end 7b in contact with the upright surface 5b of the housing 5. It is accommodated in the space 5s of the housing 5. As shown in FIG.

The furniture grounding device A4 described above is mounted on the left and right legs 1 of the desk D in the vicinity of the rear end and in the vicinity of the front end, respectively. Specifically, as shown in FIGS. 3 to 5, the leg base 11 of each leg 1 is formed with a concave portion 11a into which the housing 5 can be fitted from below. The housing 5 fitted to the portion 11a is fastened together with the lid 8 to the leg base 11 by a common bolt 9. As shown in FIG. In this embodiment, the furniture grounding device A4 attached to the rear end of the leg base 11 is arranged such that the rotating end of the rotating member A6 faces rearward and the furniture grounding device A4 attached to the front end of the leg base 11 The device A4 is set so that the rotating end of the rotating member A6 faces forward. This is because the installation point of the deformed cam-shaped grounding member A62 slightly moves during expansion and contraction due to expansion and contraction accompanied by rotation. Therefore, if all the grounding devices A4 are rotated in the same direction, the desk D will move as the furniture grounding device A4 expands and contracts. In order to stop the movement, it is appropriate to set the rotation direction of the grounding device A4 in the reverse rotation direction and mount it so that the movement cancels out. . In this embodiment, as shown in FIG. 5, the recessed portions 11a near the rear end and the front end of the leg base 11 are symmetrical in the front-rear direction. The side close to the end to be connected is defined as one end, and the opposite side is defined as the other end.

Here, when the rotating member A6 grounds and rotates, one end 7a of the elastic member 7 is pressed against the upper surface A6a on the rotating end side of the rotating member A6, and the other end 7b of the elastic member 7 is pressed against the upright surface 5b. is compressed with At this time, the elastic member 7 is partially expanded due to elastic deformation. Since the thickness dimension of the elastic member 7 is set larger than that in the loaded state, the expansion margin is provided on both sides of the elastic member 7 in the thickness direction. can do.

Here, FIG. 1 is an overall perspective view from the bottom rear showing the desk D with the first furniture grounding device A4 attached. FIG. 2 is a left side view of the desk D. FIG. FIG. 3 is an exploded perspective view showing how the first to third furniture grounding devices A4 to C4 according to the furniture system S of this embodiment are attached to the desk D. As shown in FIG. FIG. 4 is a bottom view showing the leg base 11 with the first furniture grounding device A4 attached. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4, omitting the longitudinal intermediate portion and showing enlarged portions near both ends. FIG. 6 is a side view showing the first furniture grounding device A4. FIG. 7 is a view in the direction of arrow .alpha. in FIG. FIG. 8 is an explanatory view showing how the first furniture grounding device A4 is attached to the desk D, showing an enlarged cross-sectional view of the main part of the leg base 11 corresponding to FIG. 5 of the furniture grounding device A4 separated from the leg base 11 is shown by solid lines, and the furniture grounding device A4 attached to the leg base 11 is shown by imaginary lines. FIG. 9 is an exploded perspective view showing the first furniture grounding device A4.

<Second furniture grounding device B4>
Next, the second furniture grounding device B4 will be described.

As shown in FIGS. 3, 10 and 11, the furniture grounding device B4 is supported by a housing 5 detachably provided at the bottom of the desk D, and is supported by the housing 5 and is grounded on the floor surface F on the lower side. It is provided with an adjuster B6 having a grounding member B62, and can be attached to the desk D, more specifically, the recessed portion 11a of the leg base 11 only in a predetermined posture.

Since the housing 5 is the same as that in the first furniture grounding device A4 described above, the corresponding portions are given the same reference numerals and detailed description thereof is omitted.

The adjuster B6 includes a grounding body B62 grounded on the floor surface F, a screw shaft B61 extending upward from the upper surface of the grounding body B62, and a nut B63b having a female threaded hole screwed to the screw shaft B61. an adjuster base B63 having a longitudinal central portion thereof housed in the space 5s of the housing 5 and provided with a screw insertion hole B63a through which a bolt 9 for fastening together with the leg base 11 of the desk D is passed; I have.

This furniture grounding device B4 has an adjuster B6 supported by the same housing 5 as in the first furniture grounding device A4. As with the first furniture grounding device A4, the upper surface 5f of the housing 5 forms the top surface of the furniture grounding device B4, and its shape corresponds to the bottom surface of the recessed portion 11a of the desk D.

Note that FIG. 10 is a side view showing the second furniture grounding device B4. 11 is a view in the direction of arrow β in FIG. 10. FIG.

<Third furniture grounding device C4>
Next, the third furniture grounding device C4 will be described.

As shown in FIGS. 3, 12 and 13, the furniture grounding device C4 has a housing C5 detachably provided at the bottom of the desk D, and is supported by the housing C5 and grounded to the floor surface F on the lower side. It is provided with casters C6 having wheels C62 as grounding bodies, and can be attached to the desk D, more specifically, to the recessed portion 11a of the leg base 11 only in a predetermined posture.

This housing C5 has the following configuration. That is, the housing C5 can accommodate a part of the casters C6 therein. Moreover, it has therein a bearing C5x having a substantially semi-cylindrical surface for supporting a later-described shaft C61 of the caster C6. A cover C8 is attached to the bottom surface C5d. The cover C8 has a bearing C8x having a substantially semi-cylindrical surface at a portion corresponding to the bearing C5x, and these bearings C5x and C8x support a shaft C61 for supporting a wheel C62. In addition, the wheel C62 is exposed from the window C8a of the lid C8. The housing C5 and the lid body C8 are fixed together by bolts 9. As shown in FIG. Inside the housing C5, similarly to the housing 5 of the first furniture grounding device A4, bolt insertion holes C5c1 and C5c2 are provided. It's becoming Similarly to the first furniture grounding device A4, the top surface C5f of the housing C5 forms the top surface of the furniture grounding device C4, and its shape corresponds to the bottom surface of the recess 11a of the desk D. .

The caster C6 has the aforementioned wheel C62 and a shaft C61 for supporting the wheel C62, and as described above, the shaft C61 is supported by the bearings C5x and C8x.

Note that FIG. 12 is a side view showing the third furniture grounding device C4. FIG. 13 is a γ arrow view in FIG. 12 .

<Effects of this embodiment>
As described above, according to the present embodiment, the first to third furniture grounding devices A4 to C4 have housings 5 and C5 in which joints with furniture, that is, upper surfaces 5f and C5f have the same shape. However, since the housings 5 and C5 are detachable from the furniture, that is, the desk D, the function can be achieved without changing the shape of the recessed portion 11a where the housings 5 and C5 on the desk D side are mounted.・Products with different performance can be easily provided. Specifically, any one of the first to third furniture grounding devices A4 to C4 is attached to the bottom surface of the desk D, more specifically, to the recessed portion 11a of the leg base 11 so as to correspond to various usage modes. By doing so, it is possible to provide products with different functions and performance. Therefore, when various grounding bodies are prepared, it is possible to solve the conventional problems caused by the various shapes and other configurations of the joining portion of the grounding body to the furniture.

In addition, a plurality of recessed portions 11a are provided on the bottom surface of the desk D, into which the housings 5 and C5 can be fitted from below. The bottom surface of the furniture grounding devices A4 to C4 can be attached only in a predetermined posture, and the top surfaces 5f and C5f of the housings 5 and C5 of the furniture grounding devices A4 to C4 have the shape of the bottom surface of the recessed portion 11a. , the furniture grounding devices A4 to C4 having the grounding members A62, B62, and C62 can be prevented from being attached to the furniture (desk D) in an incorrect posture.

In particular, the depth of the recessed portion 11a is made different between one end and the other end, and the height dimension of the housings 5 and C5 of the furniture grounding devices A4 to C4 correspond to the depth of the recessed portion 11a. In addition, the bolt insertion holes 5c1, 5c2, C5c1, and C5c2 of the housing 5 have different depths between the one end and the other end. The mounting postures of the grounding devices A4 to C4 can be limited to specific postures.

In addition, the first furniture grounding device A4 includes a rotating member A6 which is supported by the housing 5 so as to be vertically rotatable and has a grounding member A62 on the lower surface side, and a rotating member A6 which is arranged in the housing 5 and which rotates. An elastic member 7 having viscoelasticity that is compressed by movement is provided, and the grounding member A62 is projected and sunk into the floor surface F by the elastic repulsive force of the elastic member 7 having viscoelasticity, so oil leakage is prevented. It is possible to ensure high durability compared to the hydraulic damper type grounding device.

Moreover, instead of the grounding member moving in the vertical direction, the grounding member A62 that rotates is used to compress the elastic member 7, so that the compression direction of the elastic member 7 corresponds to the rotation locus A6k of the rotation member A6. can be made non-linear by corresponding to Therefore, even if the length dimension of the elastic member 7 in the substantial compression direction is large, it is possible to suppress an increase in the height dimension of the entire furniture grounding device. 11, it is convenient.

It should be noted that the present invention is not limited to the embodiments described above.

For example, the furniture that constitutes the furniture system of the present invention is not limited to desks, and various types of furniture such as tables, shelves, counters, partitions, and telephone stands are conceivable.

Further, as described above, the most important effect of the present invention can be obtained if the plurality of housings have at least the same joint shape with the furniture, and even if the plurality of housings have the same internal structure It does not have to be common.

For example, instead of the second and third furniture grounding devices of the illustrated embodiment described above, fourth and fifth furniture grounding devices BB4 and CC4 described below with reference to FIGS. 14 to 18 may be used. A furniture system SS for each use is conceivable.

The fourth furniture grounding device BB4 is as shown below. That is, as shown in FIGS. 14 to 16, the housing BB5 of the furniture grounding device BB4 has the same shape as the housing 5 of the illustrated embodiment described above, but has a portion corresponding to the adjuster base B63. have as one. In other words, the housing BB5 has an upper surface BB5f of the same shape as the upper surface 5f of the housing 5 of the illustrated embodiment described above, and has a female screw hole BB64 therein. A threaded shaft BB61 extending upward from the upper surface of the grounding member BB62 of the BB6 can be screwed. The housing BB5 also has screw insertion holes BB5c1 and BB5c2 for screwing into the recessed portion 11a of the furniture (desk D), and the depths of these screw insertion holes BB5c1 and BB5c2 are different from each other. That is, the fourth furniture grounding device BB4 has a housing BB5 and an adjuster BB6 that can be screwed forward and backward with respect to the housing BB5. The adjuster BB6 has the grounding member BB62 and the screw shaft BB61 described above.

The fifth furniture grounding device CC4 has the following configuration. That is, as shown in FIGS. 14, 17 and 18, the housing CC5 of the furniture grounding device CC4 comprises a housing CC5 and casters CC6 attached below the housing CC5. The housing CC5 has an upper surface CC5f having the same shape as the upper surface 5f of the housing 5 of the first furniture grounding device A4 of the illustrated embodiment, and has screw insertion holes CC5c1 and CC5c2 therein. The caster CC6 includes a wheel CC62 that is a grounding body, and a bracket C61 that supports the wheel CC62 and is attached to the lower surface of the housing CC5. The bracket CC61 has a downwardly open channel shape, and includes a shaft CC61a that pivotally supports a wheel CC62 and a screw insertion hole CC61b. This furniture grounding device CC4 is fastened and fixed to the leg base 11 of the desk D by bolts 9 sequentially passing through the screw insertion holes CC61b and CC5c1 at one end side. Also, the other end side is also fastened and fixed to the leg base 11 of the desk D by bolts 9 sequentially passing through the screw insertion holes CC61b and CC5c2.

Here, FIG. 14 is an exploded perspective view showing how the first, fourth and fifth furniture grounding devices A4, BB4 and CC4 relating to the furniture system SS described above are attached to the desk D. FIG. FIG. 15 is a side view showing the fourth furniture grounding device BB4. 16 is a ββ arrow view in FIG. 15. FIG. FIG. 17 is a side view showing the fifth furniture grounding device CC4. 18 is a γγ arrow view in FIG. 17. FIG.

Even in the furniture system SS described above, the housings 5, BB5, and CC5 have similar shapes, and such housings 5, BB5, and CC5 are detachable from the furniture, that is, the desk D. Therefore, product groups with different functions and performances can be easily provided without changing the shape of the recessed portion 11a where the housing 5, BB5, and CC5 on the desk D side are mounted.

On the other hand, in the first furniture grounding device of the illustrated embodiment described above, the housing is provided with a space in which the ceiling surface is curved to correspond to the rotation trajectory of the rotation member, and the elastic member is provided. , the elastic member is housed in the space of the housing in a curved posture along the ceiling surface, but the structure for holding the elastic member is not necessarily limited to this. However, with such a configuration, the elastic member can be inserted and held in the housing in a posture suitable for compression, thereby simplifying the structure and minimizing the number of assembly man-hours.

The elastic member is not limited to the illustrated embodiment, and may be made of urethane gel or elastomer, for example.

In the illustrated embodiment, the rotating member is provided with supporting shafts protruding from both sides of the base end, and the supporting shafts are pivotally supported on both side walls of the housing so as to be arranged in the lower end opening of the space. Of course, the pivotal support structure of the moving member is not limited to such a structure. However, if a configuration like the illustrated embodiment is adopted, the rotating member can be easily attached to the housing, and the number of parts can be reduced as compared with the case where a separate support shaft is used.

The structure for holding the rotating member is not limited to the illustrated embodiment, but in the illustrated example, the mounting of the rotating member is completed at the same time as the lower surface of the housing is closed, so that the configuration can be simplified. . In particular, as in this illustrated embodiment, if the housing and lid are fastened together to the desk, which is furniture, with a common bolt, the structure can be prevented from becoming complicated, and the number of parts can be reduced. can also be reduced. Moreover, as in the illustrated embodiment, if a temporary fixing element is provided between the housing and the lid to prevent the lid from falling off before it is fixed with bolts, the parts can be managed before assembly. Also, the work of assembling the furniture grounding device to the desk is simplified.

In the above-described embodiment, a plurality of recessed portions are provided on the bottom surface of the furniture (desk) so that the furniture grounding device can be attached only in a predetermined posture. Even if there is, it is a furniture system that prepares multiple types of furniture grounding devices that support various grounding bodies in a common housing, and selects one of the multiple types of furniture grounding devices and attaches it to the furniture. Thus, the most important effect of the present invention, that is, the effect of being able to eliminate problems due to various shapes and other configurations of the joining portion of the grounding member to the furniture can be obtained.

The grounding member of the furniture system of the present invention is not limited to those that can be elastically raised and lowered, the grounding member of the adjuster, and the wheel of the caster, and various other items may be adopted.

In addition, various modifications may be made within the scope of the present invention.

S...Furniture system D...Furniture (desk)
11a... Recessed portion A4... (First) furniture grounding device B4... (Second) furniture grounding device C4... (Third) furniture grounding device 5... Housing 5c... Bolt insertion hole 5f... Upper surface of housing 6... Rotating member A62... Grounding body B62... Grounding body C62... Grounding body (wheel)
7 Elastic member 8 Lid 8a Window 9 Bolt K Temporary fixing element h1 Height of one end of housing h2 Height of other end of housing d11 Depth of one end of recess Dimensions d12: Depth dimension of the other end of the recessed portion d21: Depth dimension of the bolt insertion hole on the one end side of the housing d22: Depth dimension of the bolt insertion hole on the other end of the housing F: Floor surface

Claims

A furniture system comprising furniture and a plurality of types of furniture grounding devices attached to a plurality of locations on the bottom surface of the furniture,
The plurality of types of furniture grounding devices comprise a common housing detachable from the furniture and grounding bodies of different modes grounded on the floor surface,
To provide a furniture system in which one of a plurality of types of furniture grounding devices can be selected and attached to furniture.
A plurality of concave portions are provided on the bottom surface of the furniture so that the housing can be fitted from below, and the shape of the bottom surface of the concave portions is such that the furniture grounding device can be attached only in a predetermined posture, 2. The furniture system according to claim 1, wherein the shape of the top surface of the housing of the furniture grounding device corresponds to the bottom surface of the recess.
The depth of the recessed portion is different between one end and the other end, and the height dimension of the housing of the furniture grounding device is made to correspond to the depth of the recessed portion at the one end and the other end. 3. A furniture system according to claim 2, which is different.
The housing of the furniture grounding device has bolt insertion holes extending vertically through both ends thereof, and the furniture grounding device is fixed to the bottom surface of the furniture by bolts passing through the bolt insertion holes. 4. The furniture system according to claim 3, wherein the bolt insertion holes have different depths on the one end side and the other end side.
One type of the grounding device for furniture includes a rotating member supported by the housing so as to be vertically rotatable and having the grounding body on the lower surface side; 5. The furniture system according to claim 1, 2, 3 or 4, further comprising a viscoelastic elastic member that is compressed by movement.
The grounding member of the furniture grounding device is held in the housing by a lid attached to the lower surface of the housing, and the lid is provided with a window through which the grounding member protrudes to the outside. 6. The furniture system of claim 1, 2, 3, 4 or 5.
The housing and the lid are fastened together to the furniture by common bolts, and there is a space between the housing and the lid to prevent the lid from falling off before being fixed by the bolts. 7. Furniture system according to claim 6, characterized in that tacking elements are provided to prevent it.
　Furniture with multiple recesses on the bottom surface that allow furniture grounding devices to be attached only in a predetermined posture.